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Abstract:
Healing of chronic wounds becomes a global health issue due to increasing incidence and associated burdens, and therefore promoting tissue-remodeling and monitoring wound-status visually are of particular significance. Herein, an electronic-skin patch (TENG-gel) composed by polydimethylsiloxane/polytetrafluoroethylene film, eutectic gallium-indium (E-GaIn), and quaternary chitosan/polyacrylamide/sodium alginate@molybdenum disulfide (MoS2) nanosheet (H-QPS@MoS2) composite hydrogel is assembled layer-by-layer. First, the TENG-gel realizes multimodal antibacterial by integrating peroxidase-like activity, photothermal therapy, and nano-knife effect, which eliminates both Gram-positive/negative bacteria with killing ratio of above 95%. Besides, electrical stimulation generated from the TENG-gel promotes migration of fibroblasts after an incubation of 48 h by activating signaling pathways, and meanwhile accelerates vascularization by secreting different growth factors of CD31, VEGF, and TGF-beta. Through providing an ideal microenvironment for tissue repair, the TENG-gel achieves 1.6-fold new hair follicles and 2.4-fold collagen deposition compared with those of the control group. More interestingly, dual temperature-/strain-sensing performance enables the TENG-gel with capability of monitoring wound status or reminding external danger signals in real-time dependent on variational electrical signals. Overall, unique advantages of such smart electronic-skin patch provide a personalized medicine strategy for realizing tissue reconstruction and monitoring synchronously.
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ADVANCED FUNCTIONAL MATERIALS
ISSN: 1616-301X
Year: 2025
1 8 . 5 0 0
JCR@2023
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 1